Category: M

The validation of knowledge in medical-surgical nursing via an examination offered by one of two organizations.  

An area in the frontal lobe in which impulses for voluntary movements originate.  

A center that controls the reflexes of the urinary bladder. These are located in the second to fourth and fourth to sixth sacral segments of the cord. Higher centers are present in the medulla oblongata, hypothalamus, and cerebrum.  

A smooth muscle cell found between glandular cells and basement membrane of sweat, mammary, and salivary glands.  

A cell present in the bone marrow of patients with multiple myeloma.  

A cell that gives rise to similar cells through fission or budding.  

A neuroglial cell of mesodermal origin present in the brain and spinal cord and capable of phagocytosis.  

A cell derived from B or T lymphocytes that can quickly recognize a foreign antigen to which the body has been previously exposed. Memory T cells stimulate T helper lymphocytes and cytotoxic T cells; memory B cells stimulate the production of antigen-specific antibodies by B plasma cells. Both types of memory cells survive for years,…

An old term for one of the mastoid sinuses of the temporal bone.  

Sufficiently dense changes in the anterior cortex of the lens to prevent the examiner from viewing the posterior portion of the lens and the posterior portion of the eye; that is, the entire lens is opaque and ophthalmoscopic examination of the eye past the lens is not possible.